Even though technology is getting to be very global the US still is setting the standard and it is to the advantage of international students to learn in the environment that has a great focus on new technology.
As such a global subject, the more international students are exposed to other cultures the better it is for them. I think that the US is a safe place for them to experience new cultures.
With a computer science degree you can pretty much go wherever you wish to find employment. There is a great demand all over the world and the pay is very good.